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Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 350 · 40 questions
TalentJR

What you do (Shadows point away from the Sun): 1. Stand the stick upright in the ground in an open sunny place. 2. Every hour, mark the tip of the shadow with chalk and write the time. 3. Measure the length of each shadow. 4. Wear a cap and never look straight at the Sun.

NameDateTime takenScore ___ / 40
  1. 1.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
  2. 2.🔍 Which is the odd one out? (a) clear plastic film (b) clean water (c) a brick (d) clear glass
  3. 3.🔍 Which is the odd one out? (a) clean water (b) a steel plate (c) clear plastic film (d) clear glass
  4. 4.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
  5. 5.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) does not work well (c) shows two times (d) works better
  6. 6.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same stick (b) the same spot (c) shadow length (d) the time of day
  7. 7.True or false: yeast is needed for the shadow clock. (a) True (b) False
  8. 8.🔦 Which of these is translucent? (a) a wooden board (b) a book (c) butter paper (d) clear glass
  9. 9.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) a cap or hat (c) a woollen sweater (d) nothing on your head
  10. 10.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
  11. 11.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the stick grows (c) the stick walks (d) the ground slides
  12. 12.True or false: air is transparent. (a) True (b) False
  13. 13.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) long (c) round (d) missing
  14. 14.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
  15. 15.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is the one thing we change. (a) True (b) False
  16. 16.📘 Why does a shadow form? (a) light bends round it (b) the ground is dark (c) an object blocks light (d) the object is cold
  17. 17.🕰️ What is a sundial used for? (a) making rainbows (b) telling the time (c) weighing things (d) measuring rain
  18. 18.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we change it (b) we measure it (c) we keep it the same
  19. 19.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
  20. 20.🧺 Which of these is needed for the shadow clock? (a) yeast (b) chalk to mark shadows (c) a magnet (d) a battery cell
  21. 21.True or false: a magnet is needed for the shadow clock. (a) False (b) True
  22. 22.🌞 When is a stick’s shadow the shortest? (a) at night (b) around noon (c) early morning (d) late evening
  23. 23.True or false: a wooden board is translucent. (a) True (b) False
  24. 24.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
  25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we keep it the same (c) we measure it
  26. 26.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a sunny open place (c) a battery cell (d) a magnet
  27. 27.🔦 Which of these is opaque? (a) clear plastic film (b) tissue paper (c) your hand (d) clear glass
  28. 28.🧺 Which of these is not needed for the shadow clock? (a) a magnet (b) a straight stick (c) a sunny open place (d) a clock to check
  29. 29.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) a sunny open place (d) a magnet
  30. 30.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a magnet (c) yeast (d) a straight stick
  31. 31.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we change it (b) we measure it (c) we keep it the same
  32. 32.🔦 Which of these is transparent? (a) clear glass (b) a brick (c) a book (d) a steel plate
  33. 33.🔦 Which of these is translucent? (a) tissue paper (b) air (c) a steel plate (d) a book
  34. 34.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
  35. 35.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a sunny open place (c) yeast (d) a straight stick
  36. 36.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) True (b) False
  37. 37.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
  38. 38.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
  39. 39.True or false: your hand is opaque. (a) True (b) False
  40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we keep it the same (b) we measure it (c) we change it

Answer key

  1. True
  2. a brick
  3. a steel plate
  4. opaque
  5. does not work well
  6. shadow length
  7. False
  8. butter paper
  9. a cap or hat
  10. not needed
  11. Earth keeps spinning
  12. True
  13. long
  14. needed
  15. True
  16. an object blocks light
  17. telling the time
  18. we keep it the same
  19. True
  20. chalk to mark shadows
  21. False
  22. around noon
  23. False
  24. not needed
  25. we measure it
  26. a sunny open place
  27. your hand
  28. a magnet
  29. a magnet
  30. a straight stick
  31. we keep it the same
  32. clear glass
  33. tissue paper
  34. True
  35. yeast
  36. True
  37. not needed
  38. not needed
  39. True
  40. we keep it the same

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